In the article, "The Force Be with You," you learned about magnets and how they work. In addition to learning how the Earth operates as a giant magnet, you discovered how magnets can
be used in everyday life, such as magnetic resonance imaging (MRI) that helps doctors see inside
patients without surgery.
Using the Internet or your science textbook, research one example of magnets being used
in everyday life. Describe what the magnetic item does and why it's important. Be sure you ask for
adult permission before using the Internet. Write the name of the website or book you used to help
you answer this question on the bottom of the page.

To place a communications satellite into a geosynchronous orbit at an altitude of 22,240 mi above the surface of the earth, the satellite first is released from a space shuttle , which is in a circular orbit at an altitude of 185 mi, and then is propelled by an upper-stage booster to its final altitude. as the satellite passes through a, the booster's motor is fired to insert the satellite into an elliptic transfer orbit. the booster is again fired at b to insert the satellite into a geosynchronous orbit. knowing that the second firing increases the speed of the satellite by 4810ft/s, determine (a.) the speed of the satellite as it approaches b on the elliptic transfer orbit, (b.) the increase in speed resulting from the first firing at a.